Why in the News?
Observed every year on July 20, the International Moon Day marks the historic first human landing on the Moon by the Apollo 11 mission in 1969.
About International Moon Day:
- Date & Purpose: Observed annually on July 20 to mark the Apollo 11 Moon landing in 1969.
- UN Recognition: Declared by the UN General Assembly in 2021 on the recommendation of COPUOS.
- First Observance: Officially celebrated for the first time on July 20, 2022.
- Activities: Includes sky-gazing, science outreach, and student competitions to promote space awareness.
- Date Controversy: While the lunar module landed on July 20, Neil Armstrong stepped onto the Moon at 2:56 UTC on July 21—yet July 20 remains the official date.
Significance:
- Historic Milestone: Celebrates Apollo 11 and humanity’s first step on the Moon by Neil Armstrong and Buzz Aldrin.
- Peaceful Space Use: Promotes the Moon as a shared heritage and fosters international cooperation in outer space.
- Sustainability Focus: Encourages responsible and eco-friendly exploration of lunar resources.
- Global Unity: Reflects the UN’s vision of peaceful space collaboration under themes like “One Moon, One Vision, One Future”.
| [UPSC 2009] India has recently landed its Moon Impact Probe on the Moon. Among the following countries, which one landed such probe on the Moon earlier?
Options: (a) Australia (b) Canada (c) China* (d) Japan |
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Why in the News?
Indian scientists from INST Mohali, IIT-Dharwad, and IIT-Kharagpur have developed a low-cost, reusable water filter that removes toxic industrial dyes using a process called piezo-photocatalysis.
About the Light-Induced Water Filter:
- Material Used: Built using 3D-printed polylactic acid (PLA) sheets (a biodegradable plastic); Sheets coated with bismuth ferrite (BFO) nanoparticles.
- Working: It works in two ways. Together, this is called piezo-photocatalysis.
- Photocatalysis: Uses sunlight to break dye molecules.
- Piezoelectric effect: Uses vibrations (ultrasound) to work even in the dark.
- Reusable: Can be used 5 times with only 3% loss in performance.
- Lab tests showed:
- 99% Congo Red removal
- 74% Methylene Blue removal (in 90 minutes)
Significance:
- Eco-Friendly Solution: Removes harmful dyes without harmful chemicals or electricity.
- Cost-Effective: Cheaper and safer than ozone or chemical-intensive treatments.
- Green Energy Use: Operates using sunlight and mechanical vibrations—no external power needed.
- Policy Alignment: Supports Namami Gange, Jal Nigam, and Aatmanirbhar Bharat missions.
- Scalability: Ideal for deployment near textile treatment plants as a sustainable technology.
| [UPSC 2023] With reference to the role of biofilters in the Recirculating Aquaculture System, consider the following statements:
1. Biofilters provide waste treatment by removing uneaten fish feed
2.Biofilters convert ammonia present in fish waste to nitrate
3.Biofilters increase phosphorus as nutrient for fish in water
How many of the statements given above are correct?
Options: (a) Only one (b) Only two* (c) All three (d) None |
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Why in the News?
Indian Navy commissioned INS Nistar, the country’s first indigenously designed and constructed Diving Support Vessel (DSV).
![[pib] INS Nistar Diving Support Vessel](https://d18x2uyjeekruj.cloudfront.net/wp-content/uploads/2025/07/nistar.jpg)
About INS Nistar:
- Project Origin: First of two Diving Support Vessels (DSVs) ordered by the Navy in 2018.
- Developer: Built by Hindustan Shipyard Ltd with input from 120 Indian MSMEs.
- Commissioning: Inducted at Naval Dockyard, Visakhapatnam.
- Legacy Name: Named after the Soviet-origin INS Nistar (1971–1989).
- Indigenization: Over 80% indigenous content, in line with Aatmanirbhar Bharat.
- Sister Ship: INS Nipun, launched in 2022, will join soon.
Key Features:
- Rescue Depth: Supports diving and submarine rescue operations up to 300 metres.
- Rescue Equipment: Equipped with ROVs, Hyperbaric Lifeboats, and Diving Chambers.
- DSRV Role: Functions as mothership for Deep Submergence Rescue Vehicles.
- Size: 120 metres long with a displacement of ~10,500 tonnes.
- Endurance: Can stay at sea for over 60 days.
- Utility Gear: Fitted with a 15-tonne subsea crane and helipad facilities.
- Medical Support: Includes OT, ICU, hospital beds, and hyperbaric treatment units.
Significance for India:
- Submarine Rescue: Provides independent submarine rescue capability.
- Operational Autonomy: Ends reliance on leased rescue platforms.
- Strategic Status: Places India among 12 countries with full submarine rescue capability.
- Regional Role: Strengthens India’s position as Net Security Provider in the Indian Ocean.
| [UPSC 2016] Which one of the following is the best description of ‘INS Astradharini’, that was in the news recently?
Options: (a) Amphibious warfare ship (b) Nuclear-powered submarine (c) Torpedo launch and recovery vessel* (d) Nuclear-powered aircraft carrier |
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Why in the News?
Recently a volcano erupted in south-west Iceland, continuing a pattern of recurring geological activity on the Reykjanes Peninsula.
About the Reykjanes Peninsula:
- Location: Situated in southwest Iceland along the Mid-Atlantic Ridge where tectonic plates diverge.
- Volcanic Reawakening: Dormant for centuries until 2021; now sees recurring eruptions.
- Eruption Type: Known for fissure eruptions—lava flows from cracks, not a central crater.
- Key Sites: Includes Grindavik (evacuated), Blue Lagoon spa, and Svartsengi power plant.
- Volcanic Importance: Part of Iceland’s 30+ active volcanic zones.
Key Features:
- Eruption Style: Produces steady lava flows with minimal ash output.
- Flight Safety: Air traffic remains unaffected due to lack of stratospheric ash.
- Evacuation Impact: Grindavik largely abandoned after 2023 lava threat.
- Long-Term Activity: Eruptions may persist for decades or longer.
- Iceland Snapshot: Population ~400,000; similar in size to Kentucky.
- Tourism Appeal: Attracts visitors like other volcanic hotspots—Mexico, Indonesia, Sicily, and New Zealand.
| [UPSC 2014] Consider the following geological phenomena:
1. Development of a fault 2. Movement along a fault
3. Impact produced by a volcanic eruption 4. Folding of rocks
Which of the above cause earthquakes?
Options: (a) 1, 2 and 3 (b) 2 and 4 (c) 1, 3 and 4 (d) 1, 2, 3 and 4* |
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Why in the News?
The Ministry of Statistics and Programme Implementation (MoSPI) is preparing for India’s 8th Economic Census by integrating it with the upcoming 16th Population Census.
About the Economic Census:
- Conducting Body: Ministry of Statistics and Programme Implementation (MoSPI).
- Purpose: Creates a detailed database of non-agricultural economic establishments in India.
- Key Data Captured: Covers location, clustering, ownership, employment size, and type of economic activity.
- Unorganised Sector Inclusion: Includes informal units, vital for understanding employment dynamics.
- Historical Background:
- Economic Enquiry Committee: Proposed by Visvesvaraya Committee (1925); Setup by Bowley-Robertson Committee (1934).
- Outcome: Led to the creation of the Central Statistical Office (CSO) in 1951 and national statistical systems.
- First Census: Conducted in 1977 (excluding Lakshadweep), targeting non-agricultural units with at least one hired worker.
- Timeline of Economic Censuses:
- Years Conducted: 1980, 1990, 1998, 2005, 2013, and 2019–21 (7th Census).
- Integration with Population Census: 2nd and 3rd rounds were aligned with the 1981 and 1991 Population Censuses.
- 7th Census Status: Completed in 2021, but results pending due to COVID-related data quality issues.
- Execution Support: MoSPI partnered with the CSC (Common Service Centre) network for grassroots-level implementation.
Integration with the 16th Population Census:
- Objective: Improve efficiency and reduce costs by leveraging shared field operations.
- Data Collection: Enumerators will note household-based economic activity for MoSPI processing.
- Census Schedule:
- Oct 1, 2026: Snow-bound and remote regions (e.g., Ladakh, J&K, HP, Uttarakhand).
- Mar 1, 2027: Rest of the country.
- Preparatory Work: State and district committees have been formed to plan the 8th Census.
| [UPSC 2018] As per the NSSO 70th Round “Situation Assessment Survey of Agriculture Households”, consider the following statements:
1.Rajasthan has the highest percentage share of agriculture households among its rural households.
2.Out of the total households in the country, a little over 60 percent being to OBCs.
3.In Kerala, a little over 60 percent of agriculture households reported to have received maximum income from sources other than agriculture activities.
Which of the statements given above is/are correct?
Options: (a) 2 and 3 only (b) 2 only (c) 1 and 3 only* (d) 1, 2 and 3 |
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Why in the News?
The new NCERT Class 8 Social Science textbook omits Tipu Sultan, Haidar Ali, and the Anglo-Mysore Wars from its chapter on India’s colonial era.
Legend of Tipu Sultan and Haidar Ali:
- Rise of Haidar Ali: Started as a horseman in the Mysore army and became de facto ruler by 1761 through military skill.
- Military Reforms: Introduced Western training, built arms factories with French help, and strengthened cavalry and artillery.
- Tipu Sultan: Born in 1751, trained by French officers and well-versed in Islamic law, Persian, Arabic, and science.
- Administrative Innovations: Introduced a new calendar, land revenue reforms, and coins in gold, silver, and copper with Persian inscriptions.
- Governance and Industry: Created seven departments, promoted silk industry, and envisioned the future Kannambadi Dam.
- French Alliance: Maintained strong ties with France, alarming the British amid global Anglo-French rivalry.
- Technological Advancement: Deployed iron-cased Mysorean rockets, which inspired British Congreve rockets.
- Moral Governance: Banned liquor, gambling, and prostitution to enforce discipline.
- Religious Policy: Though devoutly Islamic, he patronized temples and mathas, but faced criticism for intolerance in annexed regions.
About the Anglo-Mysore Wars:
First Anglo-Mysore War (1767–69)
- Alliance Against Mysore: British, Marathas, and Nizam formed a coalition against Haidar Ali.
- Diplomatic Victory: Haidar neutralized the Marathas and secured Nizam’s support.
- Outcome: Treaty of Madras (1769) restored the status quo and mutual restitution of territories.
Second Anglo-Mysore War (1780–84)
- Trigger: British violation of the Treaty of Madras and occupation of French port Mahe.
- Coalition Formation: Haidar allied with Marathas and Nizam against the British.
- Major Battle: Captured Arcot and defeated Col. Baillie; Haidar died in 1782.
- Conclusion: Tipu continued the fight; Treaty of Mangalore (1784) was the last time an Indian power dictated terms to the British.
Third Anglo-Mysore War (1790–92)
- Cause: Tipu’s attack on Travancore, a British ally.
- British Response: Cornwallis led a coordinated campaign with Maratha and Nizam support.
- Result: Tipu ceded half his territory and paid ₹3 crore under the Treaty of Seringapatam (1792).
Fourth Anglo-Mysore War (1799)
- British Strategy: Wellesley isolated Tipu diplomatically over his French ties.
- Final Battle: Tipu was killed defending Seringapatam on May 4, 1799, ending native resistance in South India.
Aftermath of the Wars:
- Fall of Resistance: Tipu’s death marked the end of organized native military opposition in the South.
- British Control: Wodeyars reinstated as puppet rulers under Subsidiary Alliance; key territories annexed by the British.
- Territorial Division: Nizam received Gooty and Gurramkonda; Marathas declined British land offer.
- Administrative Changes: Mysore came under direct British rule in 1831 due to alleged misrule; restored to Wodeyars in 1881 by Lord Ripon under a constitutional monarchy.
- Legacy: Anglo-Mysore Wars showed how native resistance could challenge colonial power through modernization, alliances, and tactical innovation.
- Rocketry Influence: Tipu’s military rocketry was studied and adapted by the British into European warfare.
| [UPSC 2014] With reference to the Anglo-Mysore Wars, consider the following statements:
1. In the Third Battle of Panipat, Ahmed Shah Abdali defeated Ibrahim Lodi.
2. Tipu Sultan was killed in the Third Anglo-Mysore War.
3. Mir Jafar entered in a conspiracy with the English for the defeat of Nawab Siraj-ud-daulah in the Battle of Plassey.
Which of the statements given above is/are correct?
(a) 1, 2 and 3 (b) 3 only* (c) 2 and 3 (d) None |
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Why in the News?
India successfully tested the Akash Prime Missile System in Ladakh, neutralizing two high-speed aerial targets at high altitude.
About Akash Prime:
- What It Is: Akash Prime is an upgraded version of the Akash Surface-to-Air Missile (SAM) system.
- High-Altitude Capability: Designed to operate effectively above 4,500 metres.
- Development: Developed by DRDO with BDL, BEL, and Army Air Defence.
- Operational Use: Proven in Operation Sindoor against aerial threats.
- Production Trials: Validated through First of Production Model (FoPM) firing trials.
- Deployment: Already in use at IAF bases and forward posts along the LAC in Ladakh.
Key Features:
- Seeker Upgrade: Equipped with an indigenous active Radio Frequency (RF) seeker for better accuracy.
- Altitude Adaptability: Engineered for high-altitude, cold-climate operations.
- Multi-Target Engagement: Capable of engaging multiple aerial threats at once.
- Speed & Accuracy: Travels at Mach 2.5 with up to 90% kill probability.
- Electronic Warfare: Equipped with ECCM features to resist electronic jamming.
- Radar Integration: Uses Rajendra radar for detection, targeting, and tracking.
- Operational Range: Effective engagement range of 25–30 km.
Other Variants of Akash:
- Akash Mark-I (1990–2005): First version under IGMDP; achieved successful dual-target intercepts by 2005.
- Akash-1S (2019): Enhanced version with 30 km range and 60 kg warhead; effective against aircraft and drones; tested successfully in May 2019.
- Akash Prime (2021 onwards): Added active RF seeker and altitude/weather resistance; tested on September 27, 2021.
- Akash-NG (Next Generation): Approved in 2016 with ₹470 crore funding; offers faster response and improved aerial threat protection.
|
| [UPSC 2009] In the context of Indian defence, consider the following statements:
1. The Shourya missile flies with a speed of more than 8 Mach. 2. The range of Shourya missile is more than 1600 km. Which of the statements given above is/are correct ?
Options: (a) 1 only (b) 2 only (c) Both 1 and 2 (d) Neither 1 nor 2* |
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Why in the News?
Researchers at the Indian Institute of Space Science and Technology (IIST) has detected radio emissions with circular polarisation near a massive young protostar, IRAS 18162-2048.
About Protostars:
- Definition: Early-stage stars formed by the gravitational collapse of dense regions in molecular clouds.
- Accretion Phase: They actively gather gas and dust but have not yet begun sustained nuclear fusion.
- Jet Ejection: Bipolar jets—high-speed streams of particles—are commonly emitted from their poles.
- Massive Protostars: Expected to evolve into stars with masses over 8–10 times that of the Sun.
- Role of Magnetism: Magnetic fields likely influence both jet formation and ejection mechanisms.
|
About the Protostar IRAS 18162-2048:
- Overview: Situated about 4,500 light years away in the Milky Way.
- Jet Feature: Powers the HH80-81 jet—one of the galaxy’s largest and brightest protostellar jets.
- Magnetic Detection: First direct evidence of magnetic fields from the protostar itself, not just its jet.
- Observation Challenges: Heavily shrouded in dense gas and dust, making traditional observation difficult.
- Jet Dynamics: Suggests that magnetic fields and rotational energy drive its development.
Recent Observations:
- Detection Method: Observed circular polarisation in radio waves—where electromagnetic fields rotate along their path.
- Rarity: Circular polarisation is extremely faint and seldom detected, even in intense sources like active galactic nuclei.
- Scientific Milestone: First-ever estimation of magnetic field strength near a massive protostar using circular polarisation.
- Magnetic Field Strength: Estimated to be 100 times stronger than Earth’s magnetic field.
- Theoretical Support: Findings reinforce the theory that magnetic fields power jets from both stars and black holes.
| [UPSC 2023] Consider the following pairs:
Objects in space :: Description
1. Cepheids : Giant clouds of dust and gas in space
2. Nebulae : Stars which brighten and dim periodically
3. Pulsars : Neutron stars that are formed when massive stars run out of fuel and collapse How many of the above pairs are correctly matched?
Options: (a) Only one* (b) Only two (c) All three (d) None |
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Why in the News?
Machilipatnam, once a flourishing ancient port city on India’s east coast, is witnessing a major transformation with the construction of a modern Greenfield port.
About Machilipatnam:
- Alternate Names: Also known as Masulipatnam, Maisolia, or Manjarika.
- Geographic Location: Located in Krishna district, Andhra Pradesh, on the southeastern Coromandel Coast, at the mouth of River Krishna, ~70 km east of Amaravati.
- Historical Importance:
- One of the most significant east coast port cities for ~1,700 years.
- Played a key role in maritime trade across ancient, medieval, and early modern periods.
- Global Trade Connections:
- Attracted traders from Rome, Arabia, Persia, Southeast Asia, and Europe.
- Known for exporting high-quality Muslin textiles prized in Roman markets.
- The term “muslin” likely derives from “Maisolia,” an ancient name of the city.
- Cultural Contributions:
- Known for Kalamkari art, a traditional textile art featuring hand-painted or block-printed designs.
- Dynastic Port Usage:
- Satavahanas (1st BCE – 2nd CE): Used as a major trade gateway.
- Vishnukundins (4th–6th CE): Trade wealth supported Buddhist monument construction (e.g., Nagarjunakonda).
- Qutb Shahis (16th–17th CE): Transformed it into a global hub for diamonds, muslin, and Kalamkari.
- Nizams of Hyderabad (18th century): Controlled the port until partial cession to the British.
- Mentions in Ancient Texts:
- Appears as Maisolia in Periplus of the Erythraean Sea.
- Listed as Maisolos in Ptolemy’s Geographia.
- Colonial Involvement:
- Dutch built a fort in the 17th century.
- British East India Company established its first Bay of Bengal factory here in 1611.
- Between 1686–1759, it changed hands among French, Dutch, and British; seized by British from the French in 1759.
- Decline of the Port:
- Anchorage Issue: Unsuitable for large ships, with anchorage 5 miles offshore.
- Cyclone Damage: A severe cyclone in 1779 killed ~20,000 and destroyed Dutch structures.
- Trade Shift: Decline due to growing prominence of Madras (Chennai) and Visakhapatnam under British rule.
- Post-Independence Claim:
- In 1947, 7th Nizam of Hyderabad attempted to reclaim it for sea access to an independent Hyderabad state.
- Modern Revival:
- A Greenfield port at Manginapudi is under construction, expected to be operational by 2026.
- Aims to restore Machilipatnam’s historical maritime legacy.
| [UPSC 2023] With reference to ancient South India, Korkai, Poompuhar and Muchiri were well known as:
(a) capital cities (b) ports* (c) centres of iron and steel making (d) shrines of Jain Tirthankaras |
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Why in the News?
The Behdienkhlam Festival of Pnar (Jaintia) community in Meghalaya was recently celebrated.
About Behdienkhlam Festival:
- Cultural Role: Major religious and cultural festival of the Pnar (Jaintia) community in Meghalaya.
- Location: Four-day festival held in Jowai, West Jaintia Hills.
- Meaning: Means driving away the plague or evil.
- Timing: Celebrated in mid-July after sowing season.
- Purpose: Prayers for a good harvest and community cleansing.
- Faith: Observed mainly by followers of the Niamtre religion.
- Women’s Role: Women offer food to ancestors but do not dance in rituals.
Key Features:
- Rituals: Dolois perform rites to drive away disease and evil.
- Symbolic Act: Youth beat rooftops with bamboo sticks to expel evil.
- Rots: 30–40 ft decorated bamboo structures with social themes.
- Khnong Ritual: Teams pull a large wooden beam and immerse it in mud.
- Dad-Lawakor: Traditional football-like game predicting harvest success.
- Celebrations: Mass dancing at Wah Aitnar pool with drums and pipes.
| [UPSC 2012] Chapchar Kut is a festival celebrated in the state of:
Options: (a) Arunachal Pradesh (b) Assam (c) Mizoram* (d) Sikkim |
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Why in the News?
The Union Cabinet has approved the Prime Minister Dhan-Dhaanya Krishi Yojana (PMDDKY), aimed at enhancing agricultural productivity, promoting sustainable practices, and improving rural livelihoods.
About Prime Minister Dhan-Dhaanya Krishi Yojana (PMDDKY)
- Objective: Aims to transform agriculture in 100 low-performing districts by addressing productivity gaps.
- Inspiration: Modelled on NITI Aayog’s Aspirational Districts Programme; first scheme focused solely on agriculture and allied sectors.
- Launch: Announced in Union Budget 2025–26 and approved by the Union Cabinet chaired by PM Narendra Modi.
- Approach: Driven by convergence of schemes, collaboration across stakeholders, and healthy competition among districts.
Key Features:
- Scheme Integration: Merges 36 schemes from 11 ministries into one unified framework.
- Budget & Duration: ₹24,000 crore annual outlay for six years (starting 2025–26).
- District Selection:
- 100 districts with low productivity, cropping intensity, and credit access
- At least one district from each state/UT
- Focus Areas:
- Boosting productivity
- Promoting crop diversification and sustainability
- Improving irrigation and water efficiency
- Expanding post-harvest storage
- Enhancing credit access
- Performance Monitoring: Monthly ranking on 117 Key Performance Indicators (KPI) via centralized dashboard.
- Support Mechanism: NITI Aayog to provide capacity-building and reviews.
- Expert Note: Credit-based selection criteria may require refinement.
Implementation:
- District Planning: Each district to prepare an Agriculture and Allied Activities Plan.
- Plan Approval: Handled by District Dhan Dhaanya Samiti, chaired by the Collector and including progressive farmers.
- National Alignment:
- Agricultural self-sufficiency
- Soil and water conservation
- Promotion of organic/natural farming
- Governance: Committees at district, state, and national levels to guide execution.
- Monitoring: Central Nodal Officers (CNOs) to conduct field visits and track progress.
- Technical Support: Agricultural universities to serve as knowledge partners.
- Expected Outcomes: Boost farm income, create local livelihoods, and support Atmanirbhar Bharat through enhanced agri-productivity.
| [UPSC 2020] Under the Kisan Credit Card scheme, short-term credit support is given to farmers for which of the following purposes?
1. Working capital for maintenance of farm assets
2. Purchase of combine harvesters, tractors and mini truck
3. Consumption requirements of farm households
4. Post-harvest expenses
5. Construction of family house and setting up of village cold storage facility
Select the correct answer using the code given below:
(a) 1, 2 and 5 only (b) 1, 3 and 4 only* (c) 2, 3, 4 and 5 only (d) 1, 2, 3, 4 and 5 |
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Why in the News?
Researchers have reported the detection of an exceptionally massive black hole merger, labelled GW231123.
About Black Holes and Black Hole Merger:
- Overview: Black holes are extremely dense celestial objects whose gravitational pull is so strong that even light cannot escape.
- Types of Black Holes:
-
- Stellar-mass: Around 20 times the mass of the Sun or more.
- Intermediate-mass: Between 100 and 100,000 times the mass of the Sun.
- Supermassive: From 100,000 to several billion times the mass of the Sun.
- Black Hole Merger:
- Occurs when two black holes orbit each other, lose energy via gravitational waves, and merge into a larger black hole.
- The GW231123 event involved black holes of approximately 140 and 100 solar masses, forming a final black hole of 225 solar masses — the largest detected through gravitational waves.
- Scientists suggest such massive black holes may form via hierarchical mergers (successive black hole mergers).
- Supports theories on the formation of supermassive black holes, often found at galactic centers.
Recent Observations:
- Event Timing: The GW231123 event was detected on November 23, 2023, though it occurred billions of years ago.
- Signal Characteristics:
- Lasted only a tenth of a second but matched Einstein’s predictions under General Relativity.
- Both black holes were rapidly spinning, hinting at a complex formation history.
- Scientific Significance:
- Involved intermediate-mass black holes, rarely observed in nature.
- Challenges existing models of black hole formation via stellar collapse.
- Indicates the presence of black holes in the so-called “forbidden mass gap”.
- Conference Presentation:
- Findings to be presented at the 24th International Conference on General Relativity and Gravitation (GR24) and the 16th Edoardo Amaldi Conference on Gravitational Waves, held in Glasgow, UK (July 14–18, 2025).
- Broader Implications:
- Opens new questions about the origin of massive black holes.
- Offers insights into gravitational physics, cosmology, astrophysics, and potentially particle physics or cosmic string theory.
- Model refinements are ongoing to better understand such extreme cosmic phenomena.
Gravitational Wave Detection Network:
- Nature of Gravitational Waves: Invisible ripples in spacetime caused by cataclysmic cosmic events like black hole collisions; predicted by Einstein in 1916.
- Global Detection Network (LIGO–Virgo–KAGRA):
- Laser Interferometer Gravitational-Wave Observatory (LIGO):
- Operates two detectors in the United States (in the states of Louisiana and Washington).
- First detected gravitational waves in 2015, leading to a Nobel Prize in Physics in 2017.
- Virgo Observatory: Located near Pisa, Italy and operated by the European Gravitational Observatory.
- Kamioka Gravitational Wave Detector (KAGRA): Located underground in the Kamioka mine, Japan, and notable for its cryogenic mirror technology.
- LIGO-India:
- Under construction in Hingoli, Maharashtra in partnership with the US National Science Foundation.
- Involves scientists from 17 Indian institutions.
| [UPSC 2019] Recently, scientists observed the merger of giant ‘blackholes’ billions of light-years away from the Earth.
What is the significance of this observation?
Options: (a) Higgs boson particles’ were detected. (b) Gravitational waves’ were detected * (c) Possibility of inter-galactic space travel through ‘wormhole’ was confirmed. (d) It enabled the scientists to understand ‘singularity’. |
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Why in the News?
Scientists at the National Institute of Plant Genome Research (NIPGR), Delhi, have successfully used CRISPR-Cas9 gene editing technology to enhance phosphate uptake and utilization in japonica rice.
Back2Basics: CRISPR-Cas9 Gene Editing
- What It Is: A powerful gene-editing tool that allows targeted changes to DNA sequences.
- Full Form: Clustered Regularly Interspaced Short Palindromic Repeats and CRISPR-associated protein 9.
- Nobel Prize: Emmanuelle Charpentier and Jennifer Doudna won the 2020 Nobel Prize in Chemistry for this discovery.
- Key Components:
- Cas9 Enzyme: Acts as molecular scissors to cut DNA at a specific location.
- Guide RNA (gRNA): Directs Cas9 to the exact DNA sequence to be edited.
- How It Works?
-
- A gRNA is designed to match the target DNA.
- Cas9 and gRNA form a complex inside the cell.
- The complex binds to the target and cuts the DNA.
- The cell’s repair system modifies the DNA—adding, deleting, or changing genetic material.
|
About Japonica Rice:
- Overview: Japonica is one of the two major cultivated rice subspecies, the other being Indica.
- Research Use: The Nipponbare variety of Japonica was used in recent gene-editing experiments.
- Why Japonica is Preferred in Studies:
- High regeneration potential in tissue culture
- Easier genetic transformation and faster growth in lab conditions
- Relevance to India: While not widely cultivated in India, Japonica acts as a model variety for testing before applying results to Indian Indica varieties.
Key Features of the Japonica Rice Study:
- Gene Editing Technique: Used CRISPR-Cas9 to edit a 30 base-pair repressor binding site on the promoter of the OsPHO1;2 gene.
- Outcomes of the Edit:
- Enhanced phosphate uptake from the soil
- Improved phosphate transport from root to shoot
- Yield increased by up to 40% using only 10% of the usual phosphate fertilizer
- Normal seed traits retained: size, shape, starch, and phosphate levels
- Significance: Demonstrated precise, minimal gene editing as a proof-of-concept that can be adapted to Indian rice varieties.
| [UPSC 2018] With reference to the Genetically Modified mustard (GM mustard) developed in India, consider the following statements:
1. GM mustard has the genes of a soil bacterium that give the plant the property of pest-resistance to a wide variety of pests.
2. GM mustard has the genes that allow the plant cross-pollination and hybridization.
3. GM mustard has been developed jointly by the IARI and Punjab Agricultural University.
Which of the statements given above is/are correct?
Options: (a) 1 and 3 only (b) 2 only * (c) 2 and 3 only (d) 1, 2 and 3 |
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Why in the News?
To bridge the research capability gap in India’s state universities, the Anusandhan National Research Foundation (ANRF) has launched the Prime Minister Professorships.
What is PM Professorships?
- Objective: A program to leverage retired experts and professionals to mentor emerging state universities.
- Relocation: Selected Professors must shift to host universities and offer sustained support.
- Goal: Democratize quality research across all regions and institutions.
- Eligibility:
Key Features:
- Host Institution Requirement
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- Placement: At Category A “spoke” institutions under ANRF’s PAIR programme
- Type: Mainly state universities with limited research capacity
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- Mentor faculty and students; Promote interdisciplinary collaboration.
- Enable 6-month internships in top institutions.
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- ₹30 lakh annual fellowship
- ₹24 lakh annual research grant
- ₹1 lakh overhead to host university
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- Tenure: Up to 5 years based on performance
- Full-time presence required
- No dual fellowship/salary
- IP rights per host institution norms
| [UPSC 2015] Which of the following statements is/are correct regarding National Innovation Foundation-India (NIF)?
1. NIF is an autonomous body of the Department of Science and Technology under the Central Government.
2. NIF is an initiative to strengthen the highly advanced scientific research in India’s premier scientific institutions in collaboration with highly advanced foreign scientific institutions.
Select the correct answer using the code given below:
a) 1 Only * b) 2 Only c) Both 1 and 2 d) Neither 1 nor 2 |
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Why in the News?
The National Institute of Epidemiology (ICMR-NIE) has launched a community-driven initiative to promote awareness and encourage the adoption of low-sodium salt substitutes.
About the Silent Salt Consumption Epidemic:
- What is it: The epidemic refers to the widespread, unmonitored intake of excess salt leading to chronic diseases.
- Silent Nature of the Problem: It remains “silent” as its health impacts like hypertension and heart ailments develop gradually over time.
- Cultural and Behavioral Factors: Cultural dietary habits and low public awareness contribute to its persistence.
- Public Health Recognition: ICMR-NIE has termed it a public health crisis, prompting intervention projects in selected states.
Salt Consumption in India:
- Urban-Rural Disparity: Urban Indians consume about 9.2 grams of salt per day, while rural populations consume around 5.6 grams—both above safe limits.
- Gender-Based Consumption Data: A national survey (2023) revealed men consume 8.9 grams and women 7.1 grams daily.
- Dietary Practices and Salt Intake: The excessive intake is tied to Indian cooking styles, snack consumption, and processed food habits.
WHO Directives on Salt Consumption:
- Recommended Salt Intake: WHO recommends a maximum daily salt intake of 5 grams per person.
- Global Average Consumption: The global average salt consumption stands at 10.8 grams/day, highlighting a universal public health challenge.
- Suggested Interventions: WHO encourages the use of low-sodium salt substitutes and public education campaigns to reduce consumption.
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Issues with High Salt Consumption:
- Health Impact: Linked to kidney stones, osteoporosis, high blood pressure, cardiovascular diseases, and strokes.
- Mortality Burden: Globally, excess salt intake is responsible for around 5 million deaths annually.
- Limited Access to Low-Sodium Salt: Only 28% of retail outlets in Chennai had low-sodium salt; just 4% availability in small grocery shops.
| [UPSC 2005] Assertion (A): The person with diabetes insipidus feels thirsty. Reason (R): A person with diabetes insipidus suffers from excess secretion of vasopressin.
Options: (a) A is true but R is false* (b) Both A and R are individually true and R is the correct explanation of A (c) A is false but R is true
(d) A is false but R is false |
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Why in the News?
CERN scientists have detected a tiny but significant difference in how matter and antimatter versions of baryons behave — offering clues to why matter dominates the universe, despite both being created equally after the Big Bang.
What is CERN’s LHCb Experiment?
- Location: At the Large Hadron Collider near Geneva, on the France–Switzerland border.
- Name: LHCb = Large Hadron Collider beauty; focuses on beauty (bottom) quarks.
- Started: Built in early 2000s; began collecting data in 2009.
- Purpose: Studies particle decay, especially of beauty quark-containing particles, to test the Standard Model and search for small anomalies.
Matter vs Antimatter – The Big Puzzle:
- Matter: Everything around us is made of it.
- Antimatter: Mirror image of matter, with opposite charges.
- Big Bang Theory: Both should have been produced equally — and destroyed each other.
- But…: Only matter remains — a mystery science is still trying to solve.
- CP Symmetry: Physics expects matter and antimatter to behave identically (Charge-Parity symmetry).
- CP Violation: When this symmetry breaks — possibly explaining why matter survived.
What did Scientists Discover?
- Focus: Lambda-b baryons and their antimatter versions.
- Finding: A small but clear CP violation — they decayed differently.
- Significance: First such discovery in baryons (previously seen only in mesons).
- Certainty: Highly reliable — only 1 in 3.5 million chance it’s random.
Why is this Important?
- Helps explain why the universe is made of matter.
- Expands discovery of CP violation to heavier particles.
- Could hint at physics beyond the Standard Model.
- Moves us closer to solving one of the universe’s biggest mysteries.
| [UPSC 2013] The efforts to detect the existence of Higgs boson particle have become frequent news in the recent past. What is/are the importance/importances of discovering this particle?
1. It will enable us to under-stand as to why elementary particles have mass. 2. It will enable us in the near future to develop the technology of transferring matter from one point to another without traversing the physical space between them. 3. It will enable us to create better fuels for nuclear fission.
Select the correct answer using the codes given below.
Options: (a) 1 only* (b) 2 and 3 only (c) 1 and 3 only (d) 1, 2 and 3 |
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Why in the News?
The Assam Forest Department is conducting DNA profiling of 2,500 rhino horns using the Rhino DNA Index System (RhODIS) to aid wildlife forensics and curb illegal trade.
What is Rhino DNA Index System (RhODIS)?
- Overview: It is a wildlife forensic tool designed to combat rhino poaching through DNA profiling.
- Development: It was originally developed by South Africa and later adapted for use in India.
- Working: The system helps build a genetic database of individual rhinos by collecting DNA from horns, tissues, dung, or blood samples.
- Utility: Each rhino has a unique DNA profile, making it possible to match confiscated horns with individual animals or poaching locations.
- Implementing Agency: In India, the Wildlife Institute of India (WII) is responsible for RhODIS genetic analysis under the RhODIS India program.
- Applications of RhODIS: The system plays a vital role in linking seized rhino horns to poaching incidents, providing admissible forensic evidence in court cases, tracking illegal wildlife trade routes and criminal networks, and monitoring genetic diversity and population health over time.
About One-Horned Rhinoceros:
- Overview: The Greater One-Horned Rhinoceros (Rhinoceros unicornis) is a herbivorous megafauna species native to the Indian subcontinent.
- Distinctive Features: It is also called the Indian rhinoceros and is characterized by its single black horn and thick, armor-like skin.
- Conservation Status: It is listed as Vulnerable on the IUCN Red List, in Appendix I of CITES, and under Schedule I of the Wildlife Protection Act, 1972 (India).
- Major Habitats in India: Its primary habitats include Kaziranga, Pobitora, Manas, and Orang National Parks in Assam; Jaldapara and Gorumara National Parks in West Bengal; and the Dudhwa Tiger Reserve in Uttar Pradesh.
- Population Growth: Its has increased from around 1,500 in the 1980s to over 4,000 in 2024, with Assam alone holding 80% of the global population. Kaziranga National Park houses the largest population, with 2,613 rhinos as per 2022 data.
- Primary Threats: Major threats include poaching for horns driven by illegal wildlife trade and false beliefs about medicinal value, as well as habitat degradation due to floods, encroachment, and climate change.
- Indian Rhino Vision 2020 (Project Rhino): It was launched in 2005, aimed to spread the rhino population across seven protected areas.
| [UPSC 2019] Consider the following statements:
1. Asiatic lion is naturally found In India only.
2. Double-humped camel is naturally found in India only.
3. One-horned rhinoceros is naturally found in India only.
Which of the statements given above is / are correct?
Options: (a) 1 only* (b) 2 only (c) 1 and 3 only (d) 1, 2 and 3 |
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Why in the News?
The Ministry of Skill Development and Entrepreneurship launched a week-long celebration to commemorate 10 years of the Skill India Mission.
About Skill India Mission:
- Launch: It was launched in 2015 by the Ministry of Skill Development and Entrepreneurship (MSDE) to empower India’s youth with employable skills.
- Training Target: The mission aims to train 40 crore individuals by 2022 across various economic sectors and make them job-ready.
- Progress Achieved: Over 2.27 crore people have been trained under the programme, including rural youth, women, and marginalized communities.
- Standardization and Quality Assurance: All training and certifications are aligned with the National Skills Qualification Framework (NSQF), ensuring uniform standards and industry relevance.
- Digital Integration: The courses are digitally integrated with DigiLocker and the National Credit Framework (NCrF) for secure storage and seamless academic and career progression.
- Employment and Education Linkages: It promotes formal recognition of skills, enhances industry alignment, and ensures better linkages with employment and higher education.
Components of Skill India Mission:
[A] Pradhan Mantri Kaushal Vikas Yojana 4.0 (PMKVY 4.0)
- Focus: It provides short-term training, reskilling, and upskilling opportunities for the youth.
- Target Age Group: The scheme targets individuals aged 15 to 59 years.
- Courses Offered: More than 400 new courses have been introduced in emerging technologies such as artificial intelligence (AI), 5G, cybersecurity, green hydrogen, and drones.
- Recognition and Mobility: It emphasizes international mobility and recognition of prior learning (RPL) to certify existing skills.
- Alignment with Flagship Missions: It is aligned with flagship government missions like PM Vishwakarma, Surya Ghar Muft Bijli Yojana, and the National Green Hydrogen Mission.
[B] Pradhan Mantri National Apprenticeship Promotion Scheme (PM-NAPS)
- Objective: PM-NAPS aims to promote apprenticeship training across industries by providing financial support.
- Incentive Structure: It offers 25% of the stipend (up to ₹1,500 per month) through Direct Benefit Transfer (DBT) to apprentices.
- Sectoral Expansion: The scheme has expanded apprenticeship opportunities in sectors like AI, robotics, blockchain, green energy, and Industry 4.0.
- Special Focus Areas: It gives special attention to small establishments, MSMEs, Aspirational Districts, and the North-East region.
- Target Age Group: The scheme targets individuals in the age group of 14 to 35 years.
[C] Jan Shikshan Sansthan (JSS) Scheme
- About: It is a community-based vocational training initiative.
- Target Beneficiaries: It focuses on empowering women, rural youth, and economically weaker sections through low-cost, flexible skilling programmes.
- Target Age Group: The scheme is designed for individuals aged 15 to 45 years.
- Integration with National Initiatives: The scheme is integrated with inclusive national initiatives like PM JANMAN and ULLAS (Understanding of Lifelong Learning for All in Society).
| [UPSC 2018] With reference to Pradhan Mantri Kaushal Vikas Yojana, consider the following statements:
1. It is the flagship scheme of the Ministry of Labour and Employment.
2. It, among other things, will also impart training in soft skills, entrepreneurship, financial and digital literacy.
3. It aims to align the competencies of the unregulated workforce of the country to the National Skill Qualification Framework.
Which of the statements given above is/are correct?
Options: (a) 1 and 3 only (b) 2 only (c) 2 and 3 only* (d) 1, 2 and 3 |
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Why in the News?
The Indian Council of Agricultural Research (ICAR) celebrated its 97th Foundation Day, marking nearly a century of contributions to Indian agriculture.
About ICAR:
- Overview: ICAR is an autonomous organization under the Department of Agricultural Research and Education (DARE), Ministry of Agriculture and Farmers Welfare, Government of India.
- Establishment: It was established on 16 July 1929 as the Imperial Council of Agricultural Research, following the recommendations of the Royal Commission on Agriculture.
- Legal Framework: It functions as a registered society under the Societies Registration Act, 1860.
- Headquarters: ICAR is headquartered in New Delhi and serves as the apex body for coordinating and managing agricultural research and education across the country.
- Structure: ICAR oversees a vast network of 113 research institutes and 74 agricultural universities, making it one of the largest national agricultural systems globally.
- Functions: It supports research in agriculture, horticulture, fisheries, animal sciences, and natural resource management.
Key Accomplishments of ICAR:
- Record Agricultural Production: India achieved record foodgrain production of 353.95 million tonnes in 2024–25. It became the largest global producer and exporter of rice and the top producer of milk (239.3 million tonnes), while ranking second in wheat, horticultural output, and fish production (18.42 million tonnes).
- Major Initiatives and Campaigns: It launched programmes such as One Scientist One Product, 100 Days 100 Varieties and Viksit Krishi Sankalp Abhiyan (reaching 1.35 crore farmers).
- Crop Science Research: Developed 679 field crop varieties, including 27 bio-fortified ones; introduced the world’s first genome-edited rice; improved varietal replacement in pulses and oilseeds; supported basmati rice exports worth ₹50,000 crore.
- Horticultural Innovation: Released 83 new varieties across fruits, vegetables, spices, flowers, and medicinal plants; distributed over 22 lakh high-quality planting materials; set up 9 Clean Plant Centres for disease-free germplasm.
- Fisheries Development: Implemented precision shrimp farming systems with high efficiency; developed low-carbon marine fish products and nutraceutical feeds; standardized breeding for 7 fish species.
- Natural Resource Management: Created a National Soil Spectral Library with 40,000 samples; developed 35 Good Agricultural Practices; promoted climate-resilient villages and crop diversification; reduced methane emissions in rice by 18% using microbial consortia.
- Livestock Sector Contributions: Registered 10 indigenous breeds; developed 5 vaccines and 7 diagnostic kits; distributed over 14.09 lakh poultry germplasm; introduced smart sensors for dairy quality monitoring.
- Major National Programmes: Launched the Global Centre of Excellence on Millets (Shree Anna), genome editing in 40 crops, the Second National Gene Bank, the MAHARISHI (Millets and Ancient Grains) Initiative, and national missions on edible oils, cotton, and emerging biotic threats.
| [UPSC 2018] With reference to the Genetically Modified mustard (GM mustard) developed in India, consider the following statements:
1. GM mustard has the genes of a soil bacterium that give the plant the property of pest-resistance to a wide variety of pests.
2. GM mustard has the genes that allow the plant cross-pollination and hybridization.
3. GM mustard has been developed jointly by the IARI and Punjab Agricultural University.
Which of the statements given above is/are correct?
Options: (a) 1 and 3 only (b) 2 only* (c) 2 and 3 only (d) 1, 2 and 3 |
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Why in the News?
The 2022 Annual Report on the Protection of Civil Rights (PCR) Act, 1955, sheds light on the declining registration of untouchability-related offences and systemic inefficiencies in enforcing the law.
Key Highlights of the 2022 Annual Report:
- The report was released by Ministry of Social Justice and Empowerment.
- Only 13 cases were registered under the PCR Act in 2022, showing a decline from previous years.
- No state or UT declared any area as “untouchability-prone.”
- Courts had 1,242 cases pending; out of 31 disposed, ONLY 1 led to conviction.
- In contrast, 62,501 cases were filed under the SC/ST Act, highlighting its growing use.
- 18,936 inter-caste marriage couples received financial incentives, but data from several major states was missing.
About Protection of Civil Rights (PCR) Act, 1955 and Its Provisions:
- Enacted under Article 35 to implement Article 17 and criminalize untouchability.
- Originally titled the Untouchability Offences Act, 1955, renamed and strengthened in 1976.
- Key Provisions:
- No provision for pardon; any conviction leads to disqualification from elections.
- Penalties: Up to 2 years imprisonment, ₹2000 fine, or both.
- Any right denied due to untouchability is considered a civil right under the Act.
- Preventive Measures under the SC/ST (Prevention of Atrocities) Act, 1989:
- Aimed at curbing atrocities and providing victim protection and rehabilitation.
- Establishes special courts and police cells.
- In some cases, allows firearms for self-defense by vulnerable SC/ST individuals.
Understanding ‘Untouchability’ and Its Abolition:
- What is it: Untouchability refers to social discrimination based on caste, historically excluding certain communities from public, religious, and social spaces.
- Constitutional Safeguard: Article 17 of the Constitution of India abolishes untouchability and prohibits its practice in any form.
- Legal Status: Any disability arising from untouchability is declared a punishable offence under Article 17.
- Nature of the Right under Article 17: Article 17 is an absolute fundamental right with no exceptions, applicable to both state and private actors.
- Lack of Definition: The term “untouchability” is not explicitly defined in the Constitution or in related legislation but is understood as referring to caste-based social discrimination.
- Scope of Discrimination: Untouchability includes denial of access to public utilities, places of worship, public services, education, and market services.
Various Judgments Related to Untouchability:
- Devarajiah v. Padmanna (1961): This case reaffirmed that Article 17 is intended to eliminate inhuman treatment based on caste distinctions.
- State of Karnataka v. Appa Balu Ingale (1993): The judgment likened untouchability to slavery and held that the caste system must be eradicated for democracy and the rule of law to survive.
- Union of India v. People’s Union for Democratic Rights (1982): The Court ruled that violations of Article 17 by private individuals also warrant state intervention.
- Union of India v. Safai Karamchari Andolan (2014): The Court directed the implementation of the Manual Scavengers and Dry Latrines (Prohibition) Act, 1993, and mandated rehabilitation, skill training, and compensation for families of victims of sewer deaths.
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| [UPSC 2020] Which one of the following categories of ‘Fundamental Rights incorporates against untouchability as a form of discrimination?
Options: (a) Right against Exploitation (b) Right to Freedom (c) Right to Constitutional Remedies (d) Right to Equality* |
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